#25 Largest Private Schools in California
Valley Christian School, System
Christian school (nondenominational) · Grades Pre-K–12
1,217 students
Cerritos, CA
BOverall grade1,217 students12 students per teacher
2026 lists
Largest Private Schools in California
The private schools in California with the most students. Top 50 of 1,834 schools.
#26 Largest Private Schools in California
Convent & Stuart Hall Schools of the Sacred Heart
Independent Catholic school · Grades K–12
1,198 students
San Francisco, CA
AOverall grade1,198 students10 students per teacher
#27 Largest Private Schools in California
Woodcrest Christian School System
Christian school (nondenominational) · Grades Pre-K–12
1,186 students
Riverside, CA
B+Overall grade1,186 students14 students per teacher
#28 Largest Private Schools in California
Heritage Christian School
Christian school (nondenominational) · Grades Pre-K–12
1,162 students
Northridge, CA
BOverall grade1,162 students24 students per teacher
#29 Largest Private Schools in California
St. Margaret S Episcopal School
Episcopal school · Grades Pre-K–12
1,158 students
San Juan Capistrano, CA
A+Overall grade1,158 students10 students per teacher
#30 Largest Private Schools in California
Viewpoint School
Independent school · Grades Pre-K–12
1,156 students
Calabasas, CA
A+Overall grade1,156 students5 students per teacher
#31 Largest Private Schools in California
Mater Dei Catholic H.S.
Diocesan school · Grades 9–12
1,146 students
Chula Vista, CA
A+Overall grade1,146 students17 students per teacher
#32 Largest Private Schools in California
Sacred Heart Schools Atherton
Independent Catholic school · Grades Pre-K–12
1,144 students
Atherton, CA
BOverall grade1,144 students
#33 Largest Private Schools in California
Archbishop Riordan High School
Diocesan school · Grades 9–12
1,143 students
San Francisco, CA
A+Overall grade1,143 students15 students per teacher
#34 Largest Private Schools in California
Christian Brothers High School
Independent Catholic school · Grades 9–12
1,141 students
Sacramento, CA
B+Overall grade1,141 students18 students per teacher
#35 Largest Private Schools in California
Sierra Canyon School
Independent school · Grades Pre-K–12
1,139 students
Chatsworth, CA
B+Overall grade1,139 students9 students per teacher
#36 Largest Private Schools in California
Sierra Canyon School
Independent school · Grades Pre-K–12
1,139 students
Chatsworth, CA
B+Overall grade1,139 students11 students per teacher
#37 Largest Private Schools in California
Central Valley Christian Schools
Calvinist school · Grades Pre-K–12
1,122 students
Visalia, CA
B-Overall grade1,122 students16 students per teacher
#38 Largest Private Schools in California
La Jolla Country Day School
Independent school · Grades Pre-K–12
1,110 students
La Jolla, CA
AOverall grade1,110 students9 students per teacher
#39 Largest Private Schools in California
Crean Lutheran High School
Lutheran (Missouri Synod) school · Grades 9–12
1,092 students
Irvine, CA
B+Overall grade1,092 students15 students per teacher
#40 Largest Private Schools in California
International School of Los Angeles
Independent school · Grades K–12
1,090 students
Los Angeles, CA
BOverall grade1,090 students10 students per teacher
#41 Largest Private Schools in California
Desert Christian Schools
Christian school (nondenominational) · Grades K–12
1,084 students
Lancaster, CA
B-Overall grade1,084 students22 students per teacher
#42 Largest Private Schools in California
Santa Fe Christian Schools
Christian school (nondenominational) · Grades K–12
1,077 students
Solana Beach, CA
AOverall grade1,077 students12 students per teacher
#43 Largest Private Schools in California
De La Salle High School
Independent Catholic school · Grades 9–12
1,042 students
Concord, CA
A+Overall gradeAll boys1,042 students13 students per teacher
#44 Largest Private Schools in California
Brookshire International Academy
Independent school · Grades 9–12
1,035 students
La Mesa, CA
B-Overall grade1,035 students
#45 Largest Private Schools in California
Bishop Amat Memorial High School
Diocesan school · Grades 9–12
1,023 students
La Puente, CA
BOverall grade1,023 students17 students per teacher
#46 Largest Private Schools in California
The King's Academy
Christian school (nondenominational) · Grades 6–12
988 students
Sunnyvale, CA
B+Overall grade988 students15 students per teacher
#47 Largest Private Schools in California
Stanford Online High School
Independent school · Grades 7–12
985 students
Redwood City, CA
B+Overall grade985 students15 students per teacher
#48 Largest Private Schools in California
The Quarry Lane School
Independent school · Grades Pre-K–12
975 students
Dublin, CA
B+Overall grade975 students8 students per teacher
From official public records, updated October 2026.